Characterization of gold-bearing tailings by diagnostic leaching for reprocessing by flotation and leaching [Caracterización de relave aurífero mediante lixiviación diagnóstica para reproceso mediante flotación y lixiviación]

Authors

  • Juan Antonio Vega Gonzalez Facultad de Ingeniería, Universidad Nacional de Trujillo, Peru
  • Nilthon Emerson Zavaleta Gutiérrez Facultad de Ingeniería, Universidad Nacional de Trujillo, Peru
  • Jheri Anderson Quispe Cueva

DOI:

https://doi.org/10.32829/sej.v6i1.167

Abstract

The purpose of the present investigation is the evaluation to reprocess the Sayapullo tailings, to extract the gold and silver that it still has, for which an initial chemical analysis, granulometric analysis and mineral flotation tests for gold and silver were made, then The percentage of gold extraction was performed by diagnosis of oxidative leaching (DLT).

The DLT consists of the quantification of the percentage of gold extraction by cyanidation as the oxidation state of the mineral increases. For this, progressive chemical attacks were carried out with oxidizing agents for each stage in the following order: Sodium Carbonate (Na2CO3), Hydrochloric Acid (HCl), Sulfuric Acid (H2SO4) and Nitric Acid (HNO3). The gold content in the solutions was determined by ICP-OES and in the solids by fire assay.

It is concluded that the Sayapullo tailings have 44.68% free gold, 3.47% gold associated with sulfates, 11.64% gold associated with carbonates, 6.13% gold associated with Cu-Zn sulfides, 31.49% associated with pyrites and arsenopyrites; and 2.60% gold associated with silicates.

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References

Celep O., & V.Serbest. 2015. Characterization of an iron oxy/hydroxide (gossan type) bearing refractory gold and silver ore by diagnostic leaching. Transactions of Nonferrous Metals Society of China, 1286-1297. DOI: https://doi.org/10.1016/S1003-6326(15)63725-6

Celep, O., Alp, I., & Deveci, H. 2008. Application of diagnostic leaching technique for refractory gold ores. 81-90. https://www.researchgate.net/publication/236000013_application_of_diagnostic_leaching_technique_for_refractory_gold_ores?enrichId=rgreq-e9a8a31161228043446f9ea30b31ccd9-XXX&enrichSource=Y292ZXJQYWdlOzIzNjAwMDAxMztBUzoxMDQ2MzAyNDc3NTU3ODFAMTQwMTk1NzIwNDIwM

Lorenzen L. & Tumilty J. 1992. Diagnostic leaching as an analytical tool for evaluating the effect of reagents on the performance of a gold plant. Minerals Engineering, 5(3-5), 503-512. DOI: https://doi.org/10.1016/0892-6875(92)90229-3

Lorenzen L. 1995. Some guidelines to the design of a diagnostic leaching experiment. Minerals Engineering, 8(3), 247-256. DOI: https://doi.org/10.1016/0892-6875(94)00122-S

Misari F. 2010. Metalurgia del oro Edit. UNMSM. Lima.

Mohammad, Ahmad.Ghahreman, & S.Bell. 2017. A Comparative Study of Gold Refractoriness by the Application of QEMSCAN and Diagnostic Leach Process. International Journal of Mineral Processing, 1-49.

Teague A., Swaminathan C., & Deventer J. 1998. The behaviour of gold bearing minerals during froth flotation as determined by diagnostic leaching. Minerals Engineering, 11(6), 523-533. DOI: https://doi.org/10.1016/S0892-6875(98)00034-X

Vega J., Zavaleta N., Angelats L., & Rodriguez C. 2021a, Caracterización De Un Mineral Refractario Aurífero-Arsenical Mediante Microscopia Electrónica De Barrido, Difracción De Rayos X y Lixiviación Diagnóstica. Conference: The 19th LACCEI International Multi-Conference for Engineering, Education, and Technology: “Prospective and trends in technology and skills for sustainable social development” “Leveraging emerging technologies to construct the future”. Buenos Aires.

Vega J., Zavaleta N., Ñique N., & Portilla H. 2021b, Treatment of a carbonaceous gold ore by oxidative leaching-roasting and direct roasting. The first LACCEI International Multi-Conference on Entrepreneurship, Innovation, and Regional Development “Ideas to Overcome and Emerge from the Pandemic Crisis”. Puerto Rico.

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Published

29-06-2022

How to Cite

Vega Gonzalez, J. A., Zavaleta Gutiérrez, N. E. ., & Quispe Cueva , J. A. . (2022). Characterization of gold-bearing tailings by diagnostic leaching for reprocessing by flotation and leaching [Caracterización de relave aurífero mediante lixiviación diagnóstica para reproceso mediante flotación y lixiviación]. Journal of Sciences and Engineering, 6(1), 20–27. https://doi.org/10.32829/sej.v6i1.167

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